NYX GLIDE ON PENCIL (Best inner rim white eyeliner I have ever used. This liner is waterproof so it stays put and last for hrs. Use it to brighten up your eyes, or enlarge your pout by drawing above the cupids bow)

Here can you see what the brushes can be used to. I think that you should do makeup the way you like it, and i don't say that using a browbrush like a eyeliner pencil is wrong. But if you're interested in seeing what they really are suposed to be used to and what should work best, this picture is perfect.:)